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Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    25/01/2025, 04:16

General

  • Target

    6f1b10a1c174cb19fe8f439044e6f447a22f357878f8b65d3e0593aab67672d1N.exe

  • Size

    2.7MB

  • MD5

    730fee3e3541f5fbf39bad2dc667ea70

  • SHA1

    0171c24593ec0a6bcf7905b8daeb232f5adc03cd

  • SHA256

    6f1b10a1c174cb19fe8f439044e6f447a22f357878f8b65d3e0593aab67672d1

  • SHA512

    aa638822f7bb6d1ab7debc5816c4dac21885716a159777a91caec748f9a21746731596bc39378c6323d168ff2d55ac610e385caf34cf2ed50488a2db2408c89c

  • SSDEEP

    49152:7bA3jfxSks5WqWk9IEJKb9aUgXXNOUnkonLxB5ctEC:7bwsgql9hJfUgX8+vc6

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Dcrat family
  • Process spawned unexpected child process 27 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 5 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Detected Nirsoft tools 2 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 27 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\6f1b10a1c174cb19fe8f439044e6f447a22f357878f8b65d3e0593aab67672d1N.exe
    "C:\Users\Admin\AppData\Local\Temp\6f1b10a1c174cb19fe8f439044e6f447a22f357878f8b65d3e0593aab67672d1N.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2928
    • C:\Users\Admin\AppData\Local\Temp\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\MsSession\Ov1RwD.vbe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3012
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\MsSession\K37wJmF1HmUF8ALyjA8MpCp.bat" "
          4⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2708
          • C:\MsSession\hyperComwin.exe
            "C:\MsSession\hyperComwin.exe"
            5⤵
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:2524
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\P7TAZNONsP.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:964
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                7⤵
                  PID:1536
                • C:\Program Files\Java\jdk1.7.0_80\jre\bin\dtplugin\smss.exe
                  "C:\Program Files\Java\jdk1.7.0_80\jre\bin\dtplugin\smss.exe"
                  7⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1696
      • C:\Users\Admin\AppData\Local\Temp\explorer.exe
        "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2868
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Windows\fr-FR\smss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1148
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\fr-FR\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1788
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 13 /tr "'C:\Windows\fr-FR\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Mail\fr-FR\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\fr-FR\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1552
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Mail\fr-FR\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\Java\jdk1.7.0_80\jre\bin\dtplugin\smss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2964
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Java\jdk1.7.0_80\jre\bin\dtplugin\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1872
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Program Files\Java\jdk1.7.0_80\jre\bin\dtplugin\smss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2904
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\MsSession\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\MsSession\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\MsSession\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2324
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 8 /tr "'C:\MsSession\conhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1028
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\MsSession\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1280
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 8 /tr "'C:\MsSession\conhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:484
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Windows\Temp\Crashpad\reports\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:768
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\Temp\Crashpad\reports\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2252
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Windows\Temp\Crashpad\reports\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2144
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 14 /tr "'C:\MsSession\taskhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2420
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhost" /sc ONLOGON /tr "'C:\MsSession\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2616
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostt" /sc MINUTE /mo 6 /tr "'C:\MsSession\taskhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2148
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:840
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:448
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2168
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\wininit.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2028
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\MSOCache\All Users\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1000
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\wininit.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1340

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\MsSession\K37wJmF1HmUF8ALyjA8MpCp.bat

      Filesize

      30B

      MD5

      fa3ead269fc71745ff9e202da56f658e

      SHA1

      5d2662e79f1e992c0c9f72c050cc676df0f3cdde

      SHA256

      1cf1a92d3e3ce17a13d4827deb0cdb9f89a40116905980b547d7f954d59040a7

      SHA512

      9e3c2ea4326648905360005b2aa95fb0e0935dc641b32af56446abf2bd69e9749c92f22e6eab4240da6505ffee6c1c3f5ed4ab6ac945f59fee2835aa2f9ec347

    • C:\MsSession\Ov1RwD.vbe

      Filesize

      209B

      MD5

      f5a3f2ada233639fa06802ff18569f99

      SHA1

      da11e9ad7bda556c74204c32691f3ec5efe8b6a5

      SHA256

      3558ba240c76b6de27cdc3ac9370d6b50774aa2d5d5e3fe6a697e971e832aef9

      SHA512

      ab223924c713a6551ded2a1e86d70533d7c1b8d5155f0d12b3b9e7fbc928ead6c452d3112484a6974b3be94b937a333d2b5f3f8852b0a21793d160689aca3ba9

    • C:\Users\Admin\AppData\Local\Temp\P7TAZNONsP.bat

      Filesize

      224B

      MD5

      88b9f5d767cff4b79b284fdb66a5a3b1

      SHA1

      66f6052a946c7015ac89aa95c3ecc3dc44e21602

      SHA256

      de34836038640868db4848548597dfaa6cf79024d5acc953a2490c4408df62aa

      SHA512

      6fbfaf533d526cfd259f5be3048e5a687b90f78a6a21acdbf16fdf6c20fdd90db934cb45361ce79f70a240dadfa8989ffd99d9cb97aeb9465ac149f75848bf9f

    • C:\Users\Admin\AppData\Local\Temp\explorer.exe

      Filesize

      130KB

      MD5

      f27a284ef9b018cdd2a98a7b78ccdcb3

      SHA1

      67e260b11e6227c18cae8925b4f6899103c607f2

      SHA256

      af86dc3f76d39b67b967a3b714e9e70ed43eec8d3871e9691cb45d84372b53fb

      SHA512

      9a8811f13517748539308a70933b126a3348407f397bf30f903019379f927532c64015853b94acf21bdbc554d638a0265d4394d026e289103db06fe93fe5524b

    • \MsSession\hyperComwin.exe

      Filesize

      2.3MB

      MD5

      82fcc473fb802d134540a4d3bc9ddc06

      SHA1

      d879feb817639baeeef685261d8574ab7944f8b2

      SHA256

      f6cf6f23a7d27460b34f9ead8e72584a706ae1e986f3fa3920c51fbd0d6f93d0

      SHA512

      6a67c4b0d98c04c8a86bdd7d3f6f72e1b0f7e3718c58c22a30004ac55c60dc53a36fc764bdee79d8aab981b863c203992abbaaaca788d200c9456ff3d0319cf2

    • \Users\Admin\AppData\Local\Temp\svchost.exe

      Filesize

      2.6MB

      MD5

      eb81df2c7222c48ef46c781d460c83b9

      SHA1

      c7fe4682e2c1bc5cc55c2913600f8950fe955129

      SHA256

      1594a7f6707f01d3f1688f726af842940fe96fe700f99df23a3d8ec6909e4b13

      SHA512

      6ce26f9d1f1f8f10d8dae13132217ca8aa2d42e98475ee0543f1cdd35f0a06f824f5ef8ab0db03b25c15041560464aa73c545d91d13d6fda72131c7ccc2c7c5b

    • memory/1696-61-0x00000000002C0000-0x00000000002D2000-memory.dmp

      Filesize

      72KB

    • memory/1696-60-0x0000000000B00000-0x0000000000B56000-memory.dmp

      Filesize

      344KB

    • memory/1696-59-0x0000000000DA0000-0x0000000000FEE000-memory.dmp

      Filesize

      2.3MB

    • memory/2524-29-0x0000000000810000-0x000000000082C000-memory.dmp

      Filesize

      112KB

    • memory/2524-31-0x0000000002210000-0x0000000002266000-memory.dmp

      Filesize

      344KB

    • memory/2524-32-0x0000000002260000-0x0000000002272000-memory.dmp

      Filesize

      72KB

    • memory/2524-33-0x0000000002290000-0x000000000229E000-memory.dmp

      Filesize

      56KB

    • memory/2524-30-0x0000000002170000-0x0000000002186000-memory.dmp

      Filesize

      88KB

    • memory/2524-28-0x00000000003B0000-0x00000000005FE000-memory.dmp

      Filesize

      2.3MB

    • memory/2928-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

      Filesize

      4KB

    • memory/2928-1-0x0000000000150000-0x0000000000410000-memory.dmp

      Filesize

      2.8MB